html {
    height: 100%;
}

* {
    margin: 0;
    padding: 0;
}

body {
    height: 100%;
    width: 100%;
    background-image: url(../images/f1_1.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: top center;
    position: relative;
}

img {
    position: absolute;
    left: 50%;
}

.cloud img:nth-child(1) {
    top: 20px;
    margin-left: -260px;
    animation: cloud 2s linear infinite alternate;
}

.cloud img:nth-child(2) {
    top: 100px;
    margin-left: 380px;
    animation: cloud 2.5s linear infinite alternate;
}

.cloud img:nth-child(3) {
    top: 200px;
    margin-left: -560px;
    animation: cloud 3s linear infinite alternate;
}

@keyframes cloud {
    0% {
        transform: translateX(0px);
    }
    100% {
        transform: translateX(40px);
    }
}

.balloon img {
    top: 220px;
    margin-left: -400px;
    animation: fuwafuwa 3s linear infinite alternate;
}

@keyframes fuwafuwa {
    0% {
        transform: translateY(0px);
    }
    100% {
        transform: translateY(40px);
    }
}

.giraffe img {
    top: 200px;
    margin-left: 150px;
}

.text img {
    top: 50%;
    transform: translate(-50%, -50%);
    animation: hipower 1s ease forwards;
}

@keyframes hipower {
    0% {
        transform: translate(-50%, -50%) scale(.7);
    }
    20% {
        transform: translate(-50%, -50%) scale(0);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.4);
    }
    80% {
        transform: translate(-50%, -50%) scale(.8);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

.promotion img {
    width: 100px;
    bottom: 42px;
}

.promotion img:nth-child(1) {
    margin-left: -390px;
    animation: textJump .7s infinite alternate;
}

.promotion img:nth-child(2) {
    margin-left: -180px;
    animation: textJump .7s .2s infinite alternate;
}

.promotion img:nth-child(3) {
    margin-left: 0px;
    animation: textJump .7s .4s infinite alternate;
}

.promotion img:nth-child(4) {
    margin-left: 180px;
    animation: textJump .7s .6s infinite alternate;
}

@keyframes textJump {
    0% {
        transform: translateY(0px);
    }
    100% {
        transform: translateY(-40px);
    }
}